graham center. >>> vice president joe biden and paul ryan face off on thursday. >> just ahead, a hot air balloon on fire. and after a cool weekend, what is ahead for your weekend. leigh glaser is up next. >> i'm mike shumann, 49er offense exploded for a >> a hot air balloon festival in arizona had scary moments after one of balloons caught fire. a balloon was getting filled up with propane when the tether rope snapped. the pilot managed to steer the balloon away from the crowd and landed a half mile away. >>> leigh glaser is here checking our weekday forecast. >> we'll see a few changes, a terrific weekend, wasn't it? we are going to start to see changes really as we head into monday morning right into the wednesday time period. it cld include srinkle or two, maybe alighthow in the south bay. high definition east bay cam showing you the beautiful lights looking west toward downtown san francisco. and live doppler 7 hd, you can see some of the mid and high-level clouds are streaming over south bay locations. here are low clouds starting to move in the north bay valley areas. santa rosa, d